Lock



W. McGILL.

Lock. APPLICATION FILED FEIL'II |921- Patented Oct. 4, 1921.

' INVENTOR. A

amf ToRA/EY4 bar having an eye i WISDOM MCGILI,` OF WAGO, TEXAS'.

LOCK.

To all whom t may concern.'

Beit known that I, lVIsDoM MGGILL, a citizen of the United States, residing at Waco, in the county of McLennan andState of Texas, have invented certain new and useful Improvements in Locks, of which the following is a specification.

This invention relates to improvements in locks and has for its principal object the rovision of a lock which onv account of its novel and unique construction and operation is unusually strong in its locked position, and is also so arranged in its mechanism as to require prior knowledge thereof before operation, such arrangement therefore tending tomake the lock more secure against its unauthorized manipulation.

Other advantages will become apparent as the description of the invention progresses, reference being had to the accompanying drawings forming part hereof in which# Figure 1 is a vertical sectional view of the lock in position on a door and illustrating the mechanism of the lock and showing the bolt in its fullest extended position in the door jamb.

Fig. 2 is a similar view illustrating one side of the lock Vwith its plate partly broken away, the bolt in locked position and showing the vertical rack bar for further securing the bolt.

Fig. 3 is a cross-sectional view taken on line 3 3 of Fig. 1.

Fig. 4 is a front or bar, and

Fig. 5 isY lock.

Referring more particularly to the drawings, 1 denotes a section of a door which is mortised to receive the body 2 of the lock. The door frame 3 is also mortised for a bolt receiving member 4 for the bolt 5 which member 4 is extended upward and has a slot for slidably receiving a vertical rack bar 6 operated by a pin 7 and pinion 8, the rack 9 to allow the bolt 5 to pass therethrough. The bolt 5 is provided with teeth 10 in mesh with a small pinion 11 carried on a pin 12 by means of which the bolt 5 may be moved in and out of the body 2 by a button 13.

A vertical bolt 14 under tension of a spring 15 co-acts with a small horizontal bolt 17 also under spring tension 18. Fig. 2 shows the bolt 5 in locked position without using the rack bar 6. v

a side view of the key for the A f YSpecification of Letters luatent.

Application led February 15, 1921.

ythe door jamb as shown 'in face view of the rack P Patented oct. 4, 1921. serial No. 445,090.

Vhen desired to lock Fig. 1, the lugs 194-19 of the key are inserted in the key hole 2O and the lugs will press upon the spring 15 on rotation of the key to pull down the bolt 14 out of engagement with the notch 16, thereby causing the bolt 17 to pass into the notch 17 a in the bolt 14. The button is then rotated to bring the lock bolt 5 outward in the position shown by dotted lines in Fig. 1. The vertical rack bar 6 is now passed downward to allow the end of the bolt 5 to pass through the eye 9 and the bolt continued inward until the notch 16 in the end of the bolt registers with the bolt 14 and the main bolt 5 in slides into the notch. The end 18a of the without the need of mortising if desired anda suitable latch member affixed to the door facing.

Having thus described the nature and objects of my invention, what I claim as new and desire to secure by Letters Patent is- 1. A lock of the character described,'com lrising a bolt with a substantially U-shaped formation on. one end formation, the shank of the bolt provided with teeth meshing with a pinion rotated by a pin to move the bolt outward and inward in the body of the lock, a vertically disposed bolt under spring tension for locking the U-shaped bolt in locking position, a horizonthe slot 19, and the and a notch in the Y tally arranged-bolt for securing the vertical bolt out of bolt, and auxiliary means engagement with the U-shaped for securing the U-shaped bolt in locked position.

2. A lock of the character described, comprising a bolt with a substantially U-shaped formation on one end and a notch in the formation, the shank of the bolt provided with teeth meshing with a pinion rotated by a pin to move the bolt outward and inward in the body of the lock, a vertically disposed bolt under spring tension for locking the Ushaped bolt in locking position, a horizontally arranged bolt for securing the vertical bolt out of engagement with said U-shaped bolt, and a rack bar With an eye, said bar With the U-shaped bolt, a .spring adjacent disposed in the door jamb'for receiving and one end of the U-shaped bolt and so arsecuring the U-shaped bolt in locked posiranged that the bolt may be used as a latch tion. y and auxiliary means for securing theJV U- 5 3. A look of the character described, havshaped bolt in locking position.

ing a U-shaped locking bolt with teeth on its In testimony whereof I have signed my shank and co-aoting with ay pinion rotated name to this specification.

by a pin for movingk the bolt in and out of is the body of the look, a vertically arranged WISDOM VMoGrIL'L. 10 bolt for securing the U-shaped bolt in locked Y mark position, a horizontally disposed bolt for Witness'to mark of Wisdom McGill:

holding the vertical bolt out of engagement J. WILLIS. 

